Rear engine mounting



*im* 8s w36' J. H. KELLER 2,639,047

REAR ENGINE MOUNTING Filed June 6', 1934 Patented Apr. 28, 1936 PATENTOFFICE REAR ENGINE? MOUNTING John H. Keller, Pontiac, Mich., assignor toGeneral Motors Corporation, Detroit, Mich., a corporation of Delaware fApplication June 6, 1934, Serial No. 729,202

9 Claims.

This invention relates to improvements in resilient mountings, beingparticularly intended to be used in supporting an internal combustionengine which has inherent vibration qualities within the frame of amotor vehicle.

As is well known an internal combustion engine sets up vibrations withinitself due to the motion of the rotating parts and also to the torquetwist of the driving action and in order to increase the 10 quietness ofoperation and riding qualities of a motor vehicle, many differentdevices are in use to absorb these vibrations.

This last mentioned torque twist causes vibrations set up about an axislongitudinally of the motor which axis passes substantially through theuniversal housing and it should be noted that the plane of thesupporting members at the location of the resilient pads issubstantially tangential to a circle which uses the above mentioned aXisas a center. In this way, my invention tends to eliminate thesevibrations by causingV a force to be applied toward the axis oflongitudinal rotation.

T'he object of the present invention is, therefore, to provide aresilient mounting for the rear end of an internal combustion enginewhich, is eincient in use, easy to manufacture, economical andmakes thewhole easier to assemble.

In the accompanying drawing:

Figure 1 is a top plan view of a motor mounted in a frame by the use ofthe present invention.

Figure 2 is a section taken on line 2-2 of Figure l, looking in thedirection of the arrows and showing a part broken away to show theconnections.

Figure 3 is a cross section taken on line 3--3 of Figure 2.

Figure 4 shows inverted a modification of the resilient pad. Y

Figure 5 is a section taken on line 5-5 of Figure 4.

Referring to the drawing, I have shown in Figure l an ordinary internalcombustion engine 2 supported by a frame I of a motor vehicle. The

motor 2 is supported at the forward end at two points 4 and 5 on twothick rubber washers 6 and 1. To the rear of the motor is secured thetransmission unit 3 and behind that the universal connection 8. Thecross frame member 9 is U- 00 shaped to go down underneath the universalhousing. Integral with the universal housing is a portion I0 whichprojects downward. This portion I0 is bored and tapped as shown at I I.Two U-shaped members I2 and I3 of the same general 55 configuration asthe cross frame member comprise the main body of the rear support. Theupper member I2 is a forging of' an inverted T- shape in cross section,as best shown in Figure 3. The lower member, consisting of a stamping,while being of the same width as the upper 5. throughout the centralportion, has wide end portions I4 which are of suiicient width so thatthey may be bent up around the upper member and practically encase theends thereof. Each of these wide end portions I4 is drilled for a boltI5 l0 by which this member is secured to the cross frame. Each of theseportions I4 is completely covered with a pad I6 of resilient material,such as rubber, and this pad is firmly fixed by vulcanizing to the lowerend portion after the bolt I5 is 15 placed in the hole in the lowermember, and also to the underside of the upper member I2.

When the wide portions I4 have been bent up around the upper member I2and then down upon the same to secure the two together as a unit 20assembly there is a pad or thickness of the resilient material under aninitial compression between the two at all points.

The cross frame 9 has a hole through it at the center as has the lowermember I3 as shown at II and I8 respectively. Both of these holes are ofsufficient size to enable the insertion of a bolt head and a wrench fortightening the bolt. The central portion of the upper member I2 is boredfor the body of the bolt I9 as shown at 20. Lock washers are used withall bolts to insure tight connection.h Y

To mou'nt an engine by this unit, the lower member may rst be bolted tothe cross frame 9 35 by the bolts I5, and then the engine is lowered tobring the boss ID over the member I2 for the insertion of the anchorbolt I 9, or alternately the unit can be mounted on the engine assemblyand fastened to the frame after the engine is dropped 40 into the frame.

In Figure 4 is shown a preformed or moulded piece of resilient material2 I, which may be used in place of pad I6, which has a depressed button22 designed to fit over the head of bolt I5 and 45 a T-shaped channel 23adapted to t around the member I2. The corners 24 and 25 are rounded tofit inside the rings I4 when they are bent around. The body has a seriesof transverse slo-ts i@ and the edges have portions cut away as shown at21, both of which tend to make the moulded piece more resilient.

It will therefore be seen that I have provided an eicient, durable andeconomic mounting for the rear of an internal combustion engine, in

' silient pads rigidly secured to the whole surface of said wide endportions, the upper member resting on the resilient pads, the free edgesof fthe wide ends being bent up around and down upon the upper member sothat the two mem-V bers are separated at all points by resilientmaterial.

2. A resilient support for one end of an internal combustion enginehaving a universal joint con-l A nection which is ultimately supportedin a frame comprising, two U-shaped metallic members, oneabove theother, the lower having wider end portions than Vthe upper, andresilient pads firmly secured to said wide end portions, the uppermember resting upon said resilient pads, the free edges of the lowermember being bent up around and down upon the upper member to secure thetwo together and yet keep them separated by resilient materialthroughout, means for securing the upper member to the universal housingand mea-'ns to secure the lower member to the frame.

3. Means forresiliently mounting an internal combustion engine having auniversal joint connection, the engine being inherently capable ofsetting up vibrations, including a main frame having a cross memberU-shaped in a. vertical plane, Va metal member bolted to the top of thelower portion of the U-shaped cross member, a second. Vmetal memberspaced from the rst by a thickness of resilient material placed upon theextending ends of the rst metal member, said ends being of sufiicientWidth to be bent up around the second member and down upon the same tosecure the two together, said resilient material being as Wide as theends so that when the latter are bent the rst and second members will beseparated by it, means for securing the second metallic member to theuniversal joint housing.

4. In a device of the class described, two U- shaped metallic members,the end portions of one being substantially wider than those of theother and bent up around the other to secure the two together, a pieceof resilient material located between the two members throughout thepoint of bending so that the two are insulated from each other. Y

5. A resilient support for the rear end of an internal combustion enginehaving a universal housing which is ultimately supported in a framecomprising a single contact member projecting from the lower surface ofthe universal housing, a winged member secured at its center to thiscontact member, a second winged member secured to the iirst at itsextremities, a resilient material spacing the two winged members attheir points of securing so that the two are insulated one from theother, means securing this second winged member at its extremities tosaid frame.

6. A support for the rear end of an internal combustion engine having auniversal housing which is ultimately supported in a frame comprisingtwo U-shaped members resiliently connected together, one member beingconnected at its center to the lower portion of the universal housing bya. bolt, the other member being connected at its extremities to theframe, said frame and other member both having an opening therein ofsu'icient size to allow the insertion of a wrench to tighten the abovementioned bolt.

'7. A resilient support for the rear end of an internal combustionengine having a universal housing which is ultimately supported on aframe comprising two members of wing shape lying parallel to each otherthroughout their lengths but spaced apart at their central portion andconnected together at their extremities the main plane'of each wingextremity being substantially tangent to a circle with its center on anaxis of rotation of the motor, resilient means between their connectedextremities and means connecting one of said members to the universalhousing and the other to the frame whereby the torque twist will beabsorbed in shear in the resilient material. v

8. A resilient support for the rear end of an internal combustion enginehaving a universal housing which is ultimately supported on a framecomprising two members of wing shape lying parallel to each otherthroughout their lengths but spaced apart at their central portion andconnected together at their extremities the main plane of each wingextremity being substantially tangent to a circle with its center on anaxis of rotation of the motor, resilient means between their connectedextremities and means connecting the center of the upper member to thelower portion of the universal housing, and means connecting theextremities of the lower member to the frame whereby the torque twistwill be absorbed in shear in the resilient material.

9. A resilient support for the rear end of an internal combustion enginehaving a universal housing which is ultimately supported on a framecomprising two members of substantially the same shape lying parallel toeach other throughout their lengths but spaced apart at their centralportion and connected together at their extremities, resilient meansbetween their connected extremities, a cross frame bar of substantiallythe same shape as said members and lying parallel thereto, meansconnecting the extremities of the adjacent member to the bar at spacedpoints, and means connecting the central portion of the other member tothe lower portion of the universal housing at one point only.

